Hose coupling

ABSTRACT

A hose coupling is provided, which is of sleeve-shaped form and which, at at least one coupling end, has a connector with a retention profiling provided on the outer circumference at least in one connector subregion, onto which coupling end a hose end of a flexible hose can be pushed. The retention profiling is formed by at least one retention groove, which is provided on the outer circumference of the connector and which has groove long sides oriented in the connector circumferential direction and groove narrow sides oriented in the connector longitudinal direction. The at least one retention groove has a groove base which is of flat form.

INCORPORATION BY REFERENCE

The present application is a Continuation-in-Part of U.S. patentapplication Ser. No. 14/274,207, filed May 9, 2014, now U.S. Pat. No.9,261,213, which is a Continuation-in-Part of U.S. patent applicationSer. No. 13/203,924, filed Aug. 30, 2011, now U.S. Pat. No. 8,752,867,which is a §371 National Phase of PCT/EP10/10157, filed Feb. 19, 2010,which claimed priority of German Patent Application No. 10 2009011411.4, Filed Mar. 3, 2009. U.S. patent application Ser. No.14/274,207 also claimed benefit of German Patent Application No. 10 2014005 837.9 filed Apr. 19, 2014. The present application also claimsbenefit of German Patent Application No. 10 2014 011 583.6, filed Aug.2, 2014, which claims benefit of German Patent Application No. 10 2014003383.8, filed Apr. 19, 2014. The entire contents of all of theaforementioned applications are included by reference herein as if fullyset forth.

FIELD OF THE INVENTION

The invention relates to a hose coupling which is of sleeve-shaped formand which, at at least one coupling end, has a connector with aretention profiling provided on the outer circumference at least in oneconnector subregion, onto which coupling end a hose end of a flexiblehose can be pushed.

BACKGROUND

In the sanitary sector, instead of thin copper pipes, increasing use isbeing made of flexible hose lines for effecting the supply of water forexample from an angle valve to a wash basin or similar water consumptionpoint. To connect the flexible hose to the angle valve or similar watersupply line and/or to the water consumption point, a hose coupling ofthe type mentioned in the introduction is required.

The known hose couplings are generally of sleeve-shaped form and have aconnection thread or a sleeve nut on one end thereof, whereas aconnector is provided on the other coupling end. Said connector has aretention profiling on the outer circumference at least in one connectorsubregion, such that one of the two hose ends of a flexible hose can bepushed onto said profiled coupling end. Said retention profiling iscommonly formed from at least one annular flange which, toward its outercircumference, tapers in the direction of the free connector end suchthat the hose end can be pushed on easily. A disadvantage is howeverthat an annular flange which narrows to a point at the outercircumference acts as an encircling cutting edge. If a torque is exertedon the hose line and the connector is rotated relative to the hose line,there is the risk of the at least one annular flange cutting into thehose inner circumference of the hose line, which can result in a leak orin reduced bursting resistance of the hose line.

U.S. Pat. No. 4,330,142 has already disclosed a sleeve-shaped hosecoupling of the type mentioned in the introduction which, at at leastone coupling end, has a connector which bears a retention profiling onthe outer circumference in at least one connector subregion, wherein thehose end of a flexible hose can be pushed onto the coupling end in theform of a connector. The retention profiling is pressed into thecoupling end by cold working by way of stamping punches. Said stampingpunches are arranged at uniform intervals around the coupling end oncommon circumferential lines and are moved in a radial direction towardthe coupling end until the concavely rounded stamping tips of eachstamping punch stamps in each case an approximately rectangular grooveinto the coupling end, wherein the displaced material between thegrooves is raised to form a ridge which separates the grooves from oneanother. The relatively narrow ridges between the grooves are scarcelycapable of absorbing and transmitting relatively high torques. Anundesired rotation of the hose coupling relative to the hose end isfurthermore abetted in that the groove base of each groove is of convexform owing to the selected production method.

Also known is another sleeve-shaped hose coupling with a connector whichhas an annular flange which tapers to a point counter to the pushing-ondirection (cf. DE 196 50 022 C1). The hose end which is pushed onto theconnector over the annular flange is secured by means of a clip whichengages around the outer circumference of the hose end and which forcesthe hose end against a connector subregion which has square depressionsarranged on circumferential lines situated adjacent to one another in anaxial direction, which depressions are delimited by webs running aroundthe hose connector and by transverse webs which connect the webs to oneanother. Such a retention profiling is also not capable of transmittingrelatively high torques; furthermore, a hose coupling of said typecannot be practically produced by way of a cutting manufacturingprocess.

FR-A-816 069 has disclosed a similar hose coupling with a connectorwhich, on its connector end region intended for having a hose end pushedthereon, has multiple encircling retention ribs which are spaced apartfrom one another, wherein, on that connector end region which has theretention ribs, there is situated a connector subregion which likewisehas square depressions arranged on circumferential lines situatedadjacent to one another in an axial direction, which depressions aredelimited by encircling webs and by transverse webs which connect thewebs to one another. Said hose coupling, too, cannot be practicallyproduced by way of a cutting machining process, and is likewise notcapable of transmitting high torques.

The problem is therefore that of providing a hose coupling of the typementioned in the introduction which, even in the event of a rotationalmovement of the hose line in relation to the connector, continues toensure an intense sealing action and high load-bearing capacity.

SUMMARY

The solution according to the invention to said problem consists, in thecase of the hose coupling of the type mentioned in the introduction, inthe features of the current patent claim 1.

In the case of the hose coupling according to the invention, theretention profiling is formed by at least one retention groove which isprovided on the outer circumference of the connector. The retentiongroove, which is provided as a recess on the connector outercircumference, has groove long sides oriented in the connectorcircumferential direction and groove narrow sides oriented in theconnector longitudinal direction. The inner circumferential elasticmaterial of the flexible hose is displaced into said at least oneretention groove such that a positively locking connection with highload-bearing capacity between the connector and the hose end of theflexible hose line is ensured. In this case, the inner circumference ofthe hose end bears against the outer circumference, which bears theretention grooves, of the connector. Since it is possible for protrudingannular flanges which taper at the outer circumference to be omitted, astability-reducing incision into the hose inner circumference is notnecessary. To also be able to transfer a higher torque to the betweenthe connector and the hose end pushed onto the connector, it is providedaccording to the invention that the at least one retention groove has agroove base which is of flat form. Such a non-circular connecting regionbetween the connector, on the one hand, and the hose line pushed ontosaid connector, on the other hand, can also have higher torquestransmitted and dissipated thereto. The hose coupling according to theinvention is then characterized by an intense sealing action and highload-bearing capacity and bursting resistance even if the hose line isrotated in relation to the hose coupling.

A preferred embodiment according to the invention provides that theconnector has the retention profiling in a connector subregion facingaway from the coupling end, and that at least one retention rib orientedin the connector circumferential direction is provided between saidretention profiling and the coupling end.

The hose coupling designed in accordance with this invention proposal isalso of sleeve-shaped form and also has, at at least one coupling end, aconnector with a retention profiling provided on the outer circumferenceat least in one connector subregion. On the connector of the hosecoupling in accordance with this invention proposal, a retentionprofiling is provided on that connector subregion which faces away fromthe coupling end, which retention profiling is likewise formed by atleast one retention groove which is provided on the outer circumferenceof the connector and which has groove long sides oriented in theconnector circumferential direction and groove narrow sides oriented inthe connector longitudinal direction. In this case, at least oneretention rib oriented in the connector circumferential direction isprovided between said retention profiling and the coupling end. In thecase of this hose coupling according to the invention, it is possiblefor the connector to now be of considerably shorter form, which yieldsan enormous material saving. In this case, the hose coupling designed inaccordance with this invention proposal can exert high axial retentionforces on the hose end, pushed onto the connector, of a flexible hoseline, and can at the same time also absorb any torsional retentionforces to be transmitted between the hose line, on the one hand, and thehose coupling, on the other hand.

The at least one retention rib provided on the hose coupling accordingto the invention may be formed with interruptions at preferably uniformintervals. However, to simplify the production of the hose couplingaccording to the invention, it is advantageous for the at least oneretention rib to be of encircling form.

To make it possible for the highest possible axial retention forces tobe transmitted between the hose coupling according to the invention andthe hose in the hose longitudinal direction, it is advantageous for atleast two retention ribs which are spaced apart from one another to beprovided between the retention profiling and the coupling end.

In order that the retention grooves do not merge into one another, it isadvantageous for the retention profiling to have at least two retentiongrooves, the adjacent groove narrow sides of which are spaced apart fromone another. If the groove narrow sides of the mutually adjacentretention grooves are spaced apart from one another, a rotationalmovement between the connector, on the one hand, and the hose end pushedonto said connector, on the other hand, is reliably prevented.

The possibility of even high torques being transmitted to the connectionprovided between the connector and hose line is further promoted if theretention profiling has at least two retention grooves arranged on acommon circumferential line.

In this case, a particularly simple embodiment according to theinvention that can be produced with relatively little outlay providesthat the retention grooves arranged on a common circumferential line arearranged so as to be distributed over the connector circumference atuniform intervals.

The simple producibility and the high load-bearing capacity of theconnection provided with the hose coupling according to the inventionbetween connector and hose end is particularly strong and capable ofbearing load if the retention grooves arranged on a commoncircumferential line define a substantially triangular, square,hexagonal or polygonal connector cross section.

To provide the retention profiling according to the invention over aslong a connector subregion as possible, it may be expedient if, in atleast one subregion of the connector, retention grooves are provided soas to be arranged on at least two circumferential lines, and if thegroove long sides, which face toward one another, of the retentiongrooves arranged on adjacent circumferential lines are spaced apart fromone another.

In this case, one embodiment of the invention provides that theretention grooves arranged on adjacent circumferential lines areprovided in lines arranged axially parallel to the connectorlongitudinal axis.

An embodiment according to the invention that differs from this providesthat the retention grooves arranged on adjacent circumferential linesare arranged offset with respect to one another. In this case, it isparticularly advantageous for the retention grooves arranged on adjacentcircumferential lines to be arranged offset with respect to one anothersuch that adjacent groove narrow sides of retention grooves arranged ona common circumferential line are arranged approximately centrally withrespect to a retention groove provided on an adjacent circumferentialline.

In order that the free hose end can be pushed easily onto the connector,designed according to the invention, of the hose coupling, it isexpedient for the connector to have a groove-free face end region on theouter circumference.

It is conducive to the free hose end being pushed easily onto theconnector of the hose coupling according to the invention if thegroove-free face end region of the connector is in the form of a push-oncone and, for this purpose, tapers in preferably conical fashion towardthe face end of the connector.

In order that the hose inner circumference is pressed in a particularlyeffective manner into the retention grooves which are provided on theconnector and which serve as retention profiling, it is advantageous forthe hose end that has been pushed onto the profiled coupling end to beretained thereon by means of a crimp sleeve which encompasses the hoseend.

A particularly advantageous refinement of the invention provides thatthe connector sections of the connector which adjoin the groove longsides and/or separate the groove long sides of the retention groovesarranged on adjacent circumferential lines from one another project inthe manner of ribs. Such an embodiment according to the invention offersthe advantage that a hose coupling of said type, despite a relativelyshort connector, nevertheless offers the same axial retention forces forthe hose and is simultaneously also capable of absorbing the torsionalretention forces. In this embodiment, the retention grooves which arearranged approximately in a line in the connector longitudinal directionand which practically form a quadrilateral surface are spaced apart fromone another by a rib which is of encircling form or which is formed withinterruptions in an encircling manner, which rib jointly contributes toensuring the axial fixing between the hose and the connector despite therelatively short structural length and the consequently reduced spacefor further encircling retention ribs.

BRIEF DESCRIPTION OF THE DRAWINGS

The following detailed description of the preferred embodiment of thepresent invention will be better understood when read in conjunctionwith the appended drawings. For the purpose of illustrating theinvention, there are shown in the drawings embodiments which arepresently preferred. It is understood, however, that the invention isnot limited to the precise arrangements and instrumentalities shown. Inthe drawings:

FIG. 1 shows, in a perspective illustration, a hose coupling which has aconnector which has a retention profiling on the outer circumference atleast in one connector subregion, which retention profiling is formed bya multiplicity of retention grooves,

FIG. 2 shows a hose coupling designed as in FIG. 1 in a longitudinalsection, onto the connector of which hose coupling there has been pusheda hose end of a flexible hose line, wherein the hose end is held on theconnector by means of a crimp sleeve which encompasses the hose end inthe region of the profiled coupling end,

FIG. 3 shows the hose coupling from FIG. 2 in a longitudinal sectionrotated slightly in the circumferential direction,

FIG. 4 shows the hose coupling already shown in FIGS. 2 and 3, with thehose end encompassed by the crimp sleeve, in a longitudinal section,

FIG. 5 shows the hose coupling from FIGS. 2 to 4 in a cross sectionthrough section plane V-V,

FIG. 6 shows the connector of a hose coupling in a partial longitudinalsection, wherein the connector bears a multiplicity of retention grooveswhich are provided on adjacent circumferential lines in lines arrangedaxially parallel to the connector longitudinal axis,

FIG. 7 shows, in a schematic illustration, a cross section through theconnector as per FIG. 6, with the section line of the partiallongitudinal section shown in FIG. 6 being indicated,

FIG. 8 shows the connector from FIGS. 6 and 7 in a side view,

FIG. 9 shows the connector from FIGS. 6 to 8 in a perspective side view,in a view directed toward the free connector end of said connector,

FIG. 10 shows a connector with a retention profiling provided from amultiplicity of retention grooves, wherein said retention grooves,arranged on adjacent circumferential lines, are arranged offset withrespect to one another,

FIG. 11 shows the connector from FIG. 10 in a perspective view frombelow of the free connector end,

FIG. 12 shows, in a side view, a connector designed similarly to that inFIGS. 6 to 9,

FIG. 13 shows the connector from FIG. 12 in a perspective view frombelow of the free connector end,

FIG. 14 shows, in a side view, a connector designed similarly to that inFIG. 10,

FIG. 15 shows the connector from FIG. 14 in a perspective view frombelow of the free connector end,

FIG. 16 shows a further embodiment according to the invention of a hosecoupling in a perspective illustration, in a view directed toward theconnector which is designed for a flexible hose to be pushed thereon,

FIG. 17 shows the hose coupling from FIG. 16 in a similar perspectiveside view,

FIG. 18 shows the hose coupling from FIGS. 16 and 17 in a longitudinalsection, wherein, in this longitudinal section, the retention grooves,provided on the connector, of a retention profiling are also shown insection,

FIG. 19 shows the hose coupling from FIGS. 16 to 18 in a perspectiveside view, in a view directed toward the other coupling end in relationto FIG. 17,

FIG. 20 shows the hose coupling from FIGS. 16 to 19 in a longitudinalsection, wherein that connector subregion which has the retentionprofiling is in this case shown in a section whose section plane liesbetween the retention grooves,

FIG. 21 shows the hose coupling from FIGS. 16 to 20 in a side view,wherein in this case, a hose end of a flexible hose line has been pushedonto the connector of said hose coupling, and wherein the hose couplingextends through the passage opening of a sleeve nut, by means of whichsleeve nut the hose coupling can be fastened to the adjacent connectionpiece of a hose line (not shown in any more detail here),

FIG. 22 shows the hose coupling from FIGS. 16 to 21 connected to thehose end of a flexible hose, in a cross section through the sectionplane XXI-XXI from FIG. 21,

FIG. 23 shows the hose coupling from FIGS. 16 to 22 in a longitudinalsection, wherein, in this longitudinal section, the retention grooves ofa retention profiling are also shown in section, and

FIG. 24 shows the hose coupling from FIGS. 16 to 23 in a longitudinalsection rotated through 45° in relation to FIG. 23.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIGS. 1 to 24 illustrate various embodiments 1, 20 of a hose couplingwhich serves for the connection of a flexible hose 2 for example to anangle valve or to a sanitary outlet fitting or similar water consumptionpoint. The hose coupling 1, 20, which is of sleeve-shaped form, has, onat least one coupling end, a connector 3 which bears a retentionprofiling on the outer circumference at least in one connectorsubregion.

As can be seen in FIGS. 2 to 5 and 21 to 24, a hose end 4 of theflexible hose 2 can be pushed onto the at least one profiled couplingend. The retention profiling provided on the connector 3 of the hosecoupling 1 is formed by at least one, and preferably—as is the casehere—multiple, retention groove(s) 5 which are provided on the outercircumference of the connector 3. Each of said retention grooves 5,formed as recesses in the connector outer circumference, has groovenarrow sides 6, 7 oriented in the connector longitudinal direction andgroove long sides 8, 9 oriented in the connector circumferentialdirection.

In each case one subset of the retention grooves 5 is arranged on acommon connector circumferential line. In this case, the adjacent groovenarrow sides 6, 7 of mutually adjacent retention grooves 5 are spacedapart from one another. Whereas the retention grooves 5 arranged on oneof the circumferential lines in the case of the connector shown in FIGS.6 to 9 and 16 to 24 define a quadrilateral connector cross section, thecorresponding retention grooves 5 arranged on one of the circumferentiallines in the embodiments shown in FIGS. 12 to 15 form a hexagonalconnector cross section. In FIGS. 6 to 9 and 12 to 14, it can be seenthat the retention grooves 5 arranged on adjacent circumferential linesmay be provided in lines arranged axially parallel to the connectorlongitudinal axis. By contrast, it can be seen from FIGS. 1, 10 to 11and 14 to 15 that the retention grooves 5 arranged on adjacentcircumferential lines may also be arranged offset with respect to oneanother such that adjacent groove narrow sides 6, 7 of retention grooves5 arranged on a common circumferential line are arranged approximatelycentrally with respect to a retention groove 5 provided on an adjacentcircumferential line.

In FIGS. 1, 6 and 8 to 24, it can be seen that the connector 3 may havea groove-free face end region 13 on the outer circumference. To make itpossible for the hose end 4 of the flexible hose 2 to be pushed onto theconnector 3 easily and with little effort, it is advantageous for thegroove-free face end region 13 to be in the form of a push-on cone, andfor this purpose, to taper in preferably conical fashion toward the faceend. In order that the elastic material of the flexible hose 2 canbecome well embedded into the retention grooves 5 which serve asretention profiling, a crimp sleeve 10 is provided which encompasses thehose end 4, which is pushed onto the profiled coupling end, of the hose2. Said crimp sleeve 10 can be deformed or reshaped from an expandedinitial position (not shown in any more detail here) into the retentionposition of reduced cross section shown in FIGS. 2 to 4. The hosecoupling 1 may bear a connection thread on its coupling end facing awayfrom the connector 3. Opposite, on their coupling end facing away fromthe connector 3, the hose couplings 1 illustrated here have an annularflange 12 which is engaged behind by a sleeve nut (not shown in any moredetail here) and through the passage opening of which the connector 3extends. To make it possible for the free hose ends of two adjacentflexible hose lines to be connected to one another, the hose couplingmay also have in each case one connector on both coupling ends thereof.

FIGS. 16 to 24 illustrate a hose coupling 20 which likewise serves forthe connection of a flexible hose 2 for example to an angle valve or toa sanitary outlet fitting or similar water consumption point. In thiscase, too, the hose coupling 20 has a radially protruding encirclingannular flange 12. Proceeding from the coupling end which bears the hoseend, there is mounted onto the hose coupling 20 a sleeve nut 21 whoseopening edge, which delimits the passage opening of the sleeve nut 21,interacts with the annular flange 12.

The hose coupling 20, which in this case is likewise of sleeve-shapedform, has, at one coupling end thereof, which coupling end faces towardthe hose 2, a connector 3 with a retention profiling which, in thiscase, is provided on the outer circumference in a connector subregionfacing away from the groove-free face end region 13.

The hose end 4 of the hose 2, which in this case has a metal braiding 22around the outer circumference, is pushed onto the groove-free face endregion, which forms said one coupling end, of the hose coupling 20. Thegroove-free face end region 13 of the connector 3 is, for this purpose,in the form of a push-on cone, and tapers in preferably conical fashiontoward the face end.

The retention profiling provided in that connector subregion which facesaway from the coupling end is formed by at least one retention groove 5which is formed as a recess in the connector and which is provided onthe outer circumference of the connector 3 and which has groove longsides 8, 9 oriented in the connector circumferential direction andgroove narrow sides 6, 7 oriented in the connector longitudinaldirection. At least one retention rib 23 which is oriented in theconnector circumferential direction is provided between said retentionprofiling, which is formed by the retention grooves 5, and the couplingend. In the exemplary embodiment shown in FIGS. 16 to 24, two retentionribs 23 which are spaced apart from one another are arranged between theretention profiling and the coupling end. Said retention ribs 23 are inthis case formed in an encircling manner around the connector 3.

In FIGS. 16, 17 and 19, it can be seen that the retention grooves 5 onthe connector 3 of the hose coupling 20 have a groove base, which inthis case is of flat form but could also be of concave or convex form.The retention profiling provided in the connector subregion of the hosecoupling 20 has, in this case, at least two and in particular fourretention grooves 5 which are each arranged approximately on a commoncircumferential line. In this case, the retention grooves 5 arranged ona common circumferential line are arranged so as to be distributed atuniform intervals over the connector circumference of the connector 3.The connector subregion has, in this case, a multiplicity of retentiongrooves 5 arranged on at least two circumferential lines, wherein thegroove long sides, facing toward one another, of the retention groovesarranged on the adjacent circumferential lines are spaced apart from oneanother. In this case, the retention grooves arranged on the adjacentcircumferential lines are provided in lines arranged axially parallel tothe connector longitudinal axis. The retention grooves 5 positionedrelative to one another in this way define a substantially quadrilateralconnector cross section of the connector in the profiled connectorsubregion. In FIGS. 16, 17 and 19, it can be clearly seen that thatconnector section 24 of the connector 3 which separates the groove longsides of the retention grooves 5 arranged on adjacent circumferentiallines from one another projects in the manner of a rib. In this case,said connector sections 24 which project in the manner of a rib may alsotaper in the radially outward direction in order that—like the retentionribs 23—they engage into the inner circumference in the hose interior ofthe hose 2 in a particularly effective manner.

LIST OF REFERENCE NUMERALS

-   -   1 Hose coupling    -   2 Hose    -   3 Connector    -   4 Hose end    -   5 Retention groove    -   6 Groove narrow side    -   7 Groove narrow side    -   8 Groove long side    -   9 Groove long side    -   10 Crimp sleeve    -   11 Groove base    -   12 Annular flange    -   13 Groove-free face end region    -   20 Hose coupling (as per FIGS. 16 to 24)    -   21 Sleeve nut    -   22 Metal braiding    -   23 Retention ribs    -   24 Connector section (between the adjacent retention grooves 5        which are spaced apart from one another in the connector        longitudinal direction)

What is claimed is:
 1. A hose coupling (1) comprising a sleeve-shapedform and which, at at least one coupling end, has a connector (3) with aretention profiling provided on the outer circumference at least in oneconnector subregion, onto which coupling end a hose end (4) of aflexible hose (2) can be pushed, wherein the retention profiling isformed by at least one retention groove (5) which is provided on theouter circumference of the connector (3) and which has groove long sides(8, 9) oriented in the connector circumferential direction and groovenarrow sides (6, 7) oriented in the connector longitudinal direction,and wherein the at least one retention groove (5) has a groove base (11)which is of flat form, wherein the connector (3) has the retentionprofiling in a connector subregion facing away from the coupling end,and wherein at least one retention rib (23) oriented in the connectorcircumferential direction is provided between said retention profilingand the coupling end, the at least one retention rib (23) is ofencircling form.
 2. The hose coupling as claimed in claim 1, wherein theretention profiling has at least two retention grooves (5), the adjacentgroove narrow sides (6, 7) of which are spaced apart from one another.3. The hose coupling as claimed in claim 1, wherein the retentionprofiling has at least two retention grooves (5) arranged approximatelyon a common circumferential line.
 4. The hose coupling as claimed inclaim 3, wherein the retention grooves (5) arranged on a commoncircumferential line are arranged so as to be distributed over theconnector circumference at uniform intervals.
 5. The hose coupling asclaimed in claim 3, wherein the retention grooves (5) arranged on acommon circumferential line define a substantially triangular, square,hexagonal or polygonal connector cross section.
 6. The hose coupling asclaimed in claim 3, wherein, in at least one subregion of the connector(3), retention grooves (5) are provided so as to be arranged on at leasttwo circumferential lines, and wherein the groove long sides (8, 9),which face toward one another, of the retention grooves (5) arranged onadjacent circumferential lines are spaced apart from one another.
 7. Thehose coupling as claimed in claim 3, wherein the retention grooves (5)arranged on adjacent circumferential lines are provided in linesarranged axially parallel to the connector longitudinal axis.
 8. Thehose coupling as claimed in claim 1, wherein the hose end (4) that hasbeen pushed onto the profiled coupling end is retained thereon by meansof a crimp sleeve (10) which encompasses the hose end (4).
 9. The hosecoupling as claimed in claim 1, wherein the connector sections (24) ofthe connector (3) which adjoin the groove long sides (8, 9) and/orseparate the groove long sides (8, 9) of the retention grooves (5)arranged on adjacent circumferential lines from one another projectoutward in the manner of ribs and taper in a radially outward direction.10. A hose coupling (1) comprising a sleeve-shaped form and which, at atleast one coupling end, has a connector (3) with a retention profilingprovided on the outer circumference at least in one connector subregion,onto which coupling end a hose end (4) of a flexible hose (2) can bepushed, wherein the retention profiling is formed by at least oneretention groove (5) which is provided on the outer circumference of theconnector (3) and which has groove long sides (8, 9) oriented in theconnector circumferential direction and groove narrow sides (6, 7)oriented in the connector longitudinal direction, and wherein the atleast one retention groove (5) has a groove base (11) which is of flatform, wherein the connector (3) has the retention profiling in aconnector subregion facing away from the coupling end, and wherein atleast one retention rib (23) oriented in the connector circumferentialdirection is provided between said retention profiling and the couplingend, and wherein at least two retention ribs (23) which are spaced apartfrom one another are provided between the retention profiling and thecoupling end.
 11. A hose coupling (1) comprising a sleeve-shaped formand which, at at least one coupling end, has a connector (3) with aretention profiling provided on the outer circumference at least in oneconnector subregion, onto which coupling end a hose end (4) of aflexible hose (2) can be pushed, wherein the retention profiling isformed by at least one retention groove (5) which is provided on theouter circumference of the connector (3) and which has groove long sides(8, 9) oriented in the connector circumferential direction and groovenarrow sides (6, 7) oriented in the connector longitudinal direction,and wherein the at least one retention groove (5) has a groove base (11)which is of flat form, wherein the retention profiling has at least tworetention grooves (5) arranged approximately on a common circumferentialline, and wherein the retention grooves (5) arranged on adjacentcircumferential lines are arranged offset with respect to one another.12. The hose coupling as claimed in claim 11, wherein the retentiongrooves (5) arranged on adjacent circumferential lines are arrangedoffset with respect to one another such that adjacent groove narrowsides (6, 7) of retention grooves (5) arranged on a commoncircumferential line are arranged approximately centrally with respectto a retention groove (5) provided on an adjacent circumferential line.13. A hose coupling (1) comprising a sleeve-shaped form and which, at atleast one coupling end, has a connector (3) with a retention profilingprovided on the outer circumference at least in one connector subregion,onto which coupling end a hose end (4) of a flexible hose (2) can bepushed, wherein the retention profiling is formed by at least oneretention groove (5) which is provided on the outer circumference of theconnector (3) and which has groove long sides (8, 9) oriented in theconnector circumferential direction and groove narrow sides (6, 7)oriented in the connector longitudinal direction, and wherein the atleast one retention groove (5) has a groove base (11) which is of flatform, wherein the connector has a groove-free face end region (13) onthe outer circumference and wherein the groove-free face end region (13)of the connector (3) is in the form of a push-on cone and tapersconically toward the face end.